I guess the known bugs depend on where you look (these might just be for the MP game though):

Quote:

There are several well-documented bugs in the beta.

INVENTORY CRASH BUG

This bug results in the game freezing or crashing when you attempt to use an inventory station. This is a known issue and is being addressed by the dev team. There is no definitive fix but one suggestion is to close any extra programs while running the game.

Stat tracking and team registration are currently not enabled in the beta. Activating these features can cause you to be dropped from a server when a map changes. Fix: Under the Multiplayer Profile tab, leave Enable Stat Tracking and Enable Team Registration unchecked.